General Information:
Chemical Formula:Pb7Sb8S19
Composition:(Molecular Weight = 3,033.65 gm)Antimony 32.11 %
SbLead 47.81 %
PbSulfur 20.08 %
S Empirical Formula: Pb7Sb8S19
Locality:Wolfsberg in the Hartz Mountains.
Name Origin:From the Greek many - 'hetero' and form - 'morphos.'
Physical Properties: Cleavage:[112] Good
Color:black.
Density:5.73
Diaphaniety:Opaque
Hardness:2.5-3 - Finger Nail-Calcite
Luster:Metallic
Streak:black
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